Theory

CH20 - D.C. CIRCUITS

A network of resistors, each of resistance $R$, is shown in Fig. 7.1.(a) Calculate the total resistance, in terms of $R$, between points(i) A and C,re...

2009 Summer

MCQ

CH20 - D.C. CIRCUITS

Each of Kirchhoff's two laws presumes that some quantity is conserved. Which row states Kirchhoff's first law and names the quantity that is conserve...

2009 Winter

MCQ

CH20 - D.C. CIRCUITS

The diagram shows the symbol for a wire carrying a current $I$. What does this current represent?

2009 Winter

MCQ

CH20 - D.C. CIRCUITS

A potential divider consisting of resistors of resistance $R_1$ and $R_2$ is connected to an input potential difference of $V_0$ and gives an output p...

2009 Winter

MCQ

CH20 - D.C. CIRCUITS

A network of resistors consists of two 3.0\Omega resistors and three 6.0\Omega resistors.What is the combined resistance of this network between point...

2009 Winter

MCQ

CH20 - D.C. CIRCUITS

The resistance of a thermistor depends on its temperature, and the resistance of a light-dependent resistor (LDR) depends on the illumination.Under wh...

2010 Summer

MCQ

CH20 - D.C. CIRCUITS

The resistors P, Q, and R in the circuit have equal resistance.The battery, of negligible internal resistance, supplies a total power of 12W.What is t...

2010 Summer

MCQ

CH20 - D.C. CIRCUITS

In deriving a formula for the combined resistance of three different resistors in series, Kirchhoff’s laws are used. Which physics principle is invo...

2010 Summer

MCQ

CH20 - D.C. CIRCUITS

A source of e.m.f. of 9.0 mV has an internal resistance of 6.0 Ω. It is connected across a galvanometer of resistance 30 Ω. What will be the current...

2010 Summer

MCQ

CH20 - D.C. CIRCUITS

In each arrangement of resistors, the ammeter has a resistance of 2\(\Omega\).Which arrangement gives the largest reading on the ammeter when the same...

2010 Summer

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

A student creates a table to show reasonable estimates of some physical quantities. Which row is not a reasonable estimate? [Table_1]

2017 Summer

MCQ

CH3 - KINEMATICS

A particle travels in a straight line with speed $v$. The particle slows down and changes direction. The new speed of the particle is $\frac{v}{2}$. ...

2017 Summer

MCQ

CH1 - PHYSICAL QUANTITIES & UNITS

The speed $v$ of a liquid leaving a tube depends on the change in pressure $\Delta P$ and the density $\rho$ of the liquid. The speed is given by the ...

2017 Summer

MCQ

CH3 - KINEMATICS

The values of displacement, velocity and acceleration of a vehicle can be deduced from graphs representing its motion. Often the areas under these gra...

2017 Summer

MCQ

CH4 - DYNAMICS

A ball is released from rest above a hard, horizontal surface. The graph shows how the velocity of the bouncing ball varies with time. At which point...

2017 Summer

MCQ

CH3 - KINEMATICS

A ball is kicked upwards at an angle of 45° to horizontal ground. After a short flight, the ball returns to the ground. It may be assumed that ai...

2017 Summer

MCQ

CH4 - DYNAMICS

The mass of a rocket-propelled truck is approximately equal to the mass of the fuel in its tank. The fuel is ignited and the truck is propelled along ...

2017 Summer

MCQ

CH3 - KINEMATICS

An object is dropped at time $t = 0$ from a high building. Air resistance is significant. Three graphs are plotted against time. The height of the...

2017 Summer

MCQ

CH2 - MEASUREMENT TECHNIQUES

A student attempts to find the density $\rho$ of aluminium by taking measurements of a rectangular sheet. mass $m = 51.6 \pm 0.1$ g length $l = 100.0 ...

2017 Summer

MCQ

CH4 - DYNAMICS

The graph shows how the momentum of a motorcycle changes with time. What is the resultant force on the motorcycle? 

2017 Summer